EP0809533B1 - Milling roller and mill fitted therewith - Google Patents

Milling roller and mill fitted therewith Download PDF

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Publication number
EP0809533B1
EP0809533B1 EP96904065A EP96904065A EP0809533B1 EP 0809533 B1 EP0809533 B1 EP 0809533B1 EP 96904065 A EP96904065 A EP 96904065A EP 96904065 A EP96904065 A EP 96904065A EP 0809533 B1 EP0809533 B1 EP 0809533B1
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EP
European Patent Office
Prior art keywords
blade
threaded
comminution
bodies
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP96904065A
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German (de)
French (fr)
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EP0809533A1 (en
Inventor
Peter Rössler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weima Maschinenbau GmbH
Weima Apparatebau GmbH
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Weima Maschinenbau GmbH
Weima Apparatebau GmbH
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Publication of EP0809533A1 publication Critical patent/EP0809533A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit

Definitions

  • the invention relates to a comminution roller according to the preamble of claim 1 and a shredding machine with such a.
  • a rotor according to the preamble of claim 1 is known for example from DE-U 89 15 534 or DE-A-4 242 740.
  • At the knife holders are V-shaped cross-section having transverse grooves, which are triangular Cross-sectional ribs of the roller base body are milled in. Knife carriers are in these grooves welded, on which in turn the knife body are attached using screws.
  • the purpose of the present invention is a shredding roller further developed according to the preamble of claim 1 be that the knife body directly on the roller body are attached.
  • a shredding roller according to claim 2 can the knife body after wear of its cutting edges implement to unused cutting edges to the in the working direction of rotation at the front and radially outside Bring job.
  • a comminution machine has the same Intervention geometry between the knife bodies and the Teeth of the counter knife as you would with a normal one Rotor has, in which the end face of the knife body in essentially in an axial plane of the comminution roller lie.
  • Figure 1 is a storage container for to be shredded Total waste such as wood or plastic residues Designated 10. It has a rear wall 12, one for this parallel front wall broken away in the drawing, a right wall 14 and a left wall 16.
  • the bottom of the storage container 10 consists of two inclined converging walls 18, 20 and a horizontal bottom wall 22.
  • total comminution roller designated by 24.
  • This has a roller base body 26 with a plurality of axially successive circumferential ribs 28. In the latter are two each at diametrically opposite positions Knife receptacles 30 incorporated, the knife receptacles 30 axially successive circumferential ribs in the circumferential direction against each other by a constant angular amount are offset, in the illustrated embodiment Is 45 °, much smaller in practice is chosen, e.g. B. to 15 °.
  • Knife bodies each sit in the knife receptacles 30 32. Details of the attachment of the knife body 32 will be described in more detail later.
  • the roller base body 26 has on its two end faces molded stub shafts 34, which are not shown in FIG Bearings run from the back and front walls of the reservoir 10 are worn.
  • the shredding roller 24 is countered by a geared motor 36 driven clockwise, as schematically in Figure 1 indicated.
  • the middle planes go the knife body 32 is not through the axis of the Crushing roller 24, are rather in the working direction the shredding roller 24 seen in front of the Roller axis. This ensures that the front cutting edges of the knife body 32 revolve at a greater distance around the roller axis than the rear, inactive in the working direction of rotation Cutting edges of the knife body 32.
  • the bottom wall 22 is relative the axis of the shredding roller 24 down offset, and her on the right in the drawing free section is formed by a counter knife 38, which has teeth 40 at the free end, between which spaces 42 remain.
  • the whole Arrangement is chosen so that the knife body 32 under run through the gaps 42 with little play can and between the teeth 40 and the circumferential ribs 28 a gap remains, which is larger is as the working gap between knife bodies 32 and Counter knife 38, but so small that there is no Material can jam.
  • the shredding roller 24 is a cylindrical one Hole screen 44 arranged over which the knife body 32 run away with little play.
  • a screw conveyor 48 runs through one Motor 50 is driven, as indicated schematically.
  • the screw conveyor 48 conveys shredded material from the collecting trough 46 into a delivery nozzle 52.
  • a box-shaped slide 54 by a double-acting hydraulic cylinder 56 movable, which in turn periodically by a hydraulic unit 58 in the sense of an extension or retraction pressurized oil on its piston rod becomes.
  • the slider 54 presses lying on the bottom wall 22 Material in the area of engagement between the Shredding roller 24 and counter knife 38.
  • Figures 2 and 3 show a first type of attachment the knife body 32 on the knife receptacles 30.
  • the knife receptacles 30 are in the transverse direction milled centrally through a section of a peripheral rib and reach twice the normal height of the Circumferential rib.
  • the peripheral ribs have a triangular cross section with an outside opening angle of 90 °.
  • the knife receptacles 30 also have one Lateral boundary surfaces set at 90 °. In this way, the knife receptacles 30 at one Angular position a smooth continuation of the flanks of neighboring Circumferential ribs.
  • the knife bodies 32 are square prisms. Your in Direction of rotation front or rear end faces in the present description and claims collectively referred to as main surfaces. The distance of the Main surfaces are also called the thickness or length of the knife body referred to, the edge length of the main faces also short as the edge length of the knife body.
  • a mounting hole stepped from both sides 60 is provided.
  • Threaded hole 62 is provided, and the knife body 32 each by a threaded bolt 64 on a threaded bore 62 screwed, the head 66 of the threaded bolt completely in the expanded designated 68 Bore section of mounting hole 60 receptacle finds. In this way, the knife bodies 32 are fixed, however releasably connected to the roller base body 26.
  • the edge length is Knife body 32 larger than the length of the flanks of the Circumferential ribs 28.
  • the tip of the Knife body 32 each by a corresponding distance d over the tip of the associated circumferential rib 28 over. This means that if you have a small Gap s between the counter knife 38 and the knife bodies 32 sets a correspondingly larger gap S * between the flanks of the circumferential ribs 28 and the Counter knife 38 has.
  • the piercing point is the axis of the shredding roller 24 denoted by M in the drawing plane.
  • M the axis of the threaded hole 62 so that it intersects the point M, so the outermost tip in working direction a knife body 32 at the same distance around the Roller axis revolve like the rear extreme tip.
  • the bottom of the knife holder is 30 compared to the case described above by an angle w tilted so that the axis of the threaded bore 62 and thus the center plane of the knife body 32 in the direction of rotation seen in front of the axis of the shredding roller marked with M. 24 lies.
  • the knife body 32 twice the thickness as in the embodiment according to Figure 2, and in it are in the thickness direction spaced two mounting holes 60 and 60 'are provided.
  • the bottom of the knife holder 30 also has two threaded bores 62, 62 ', the distance between which corresponds to the mounting holes 60, 60 '.
  • the knife body 32 is now on by two threaded bolts 64, 64 ' braced the bottom of the knife holder 30 and thus particularly reliable against tilting moments and impact loads secured.
  • the knife body according to FIG. 4 can do the same as the knife body are implemented four times according to FIG two new cutting edges in engagement with the teeth of the Bring counter knife 38.
  • Figure 5 is in the working direction seen back section of the thick Knife body of Figure 4 by a support body 70th replaced, an upper, designed as a square Support portion 72 and a lower threaded portion 74 having.
  • the latter is in the rear threaded hole 62 ' turned in. So that the support section 72 when screwing in of the support body 70 on the adjacent circumferential ribs and can run past the side walls of the knife holder 30, is coaxial to the threaded bore 62 a cylindrical cut 76 of the adjacent circumferential ribs are provided.
  • the knife attachment according to Figure 5 is with respect to Support and tilt protection of the knife body 32 essentially equivalent to the knife attachment Figure 4; but one can have smaller thickness knife bodies use.
  • the support body 78 is complementary in its underside to the shape of the knife holder 30 and puts in his upper section a smooth continuation of the peripheral rib 28 represents
  • Figure 7 shows an integrated into the interior of the knife body Support device, which in particular also allows knife bodies with concave main surfaces with a simple Support the geometry of the support body well.
  • the threaded bore 62 is provided with a counter bore 80, the same diameter and slightly smaller Like counterbore 68 of knife body 32, depth has In the aligned counter bores 68 and 80 is one Support sleeve 82 used without play, the length of which corresponds to twice the length of the counterbore 80. In order to the support sleeve 82 holds transverse impact loads and tilting moments reliably away from the threaded bolt 64, but does not hinder firm clamping of the knife body 32 with the bottom of the knife holder 30.
  • knife attachment according to FIG. 7 can also be used in conjunction with knife bodies 32, which have major concave surfaces as shown at 84.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)

Abstract

A milling roller (24) for a mill has transverse blade recesses (30) in circumferential grooves (28) with a threaded drilling (62) in their bases. Blade bodies (32) to be inserted into the blade recesses (30) have a square section and an assembling drilling (60) along the diagonal of their central surface. A threaded stud (64) extends therethrough and mates with the threaded drilling (62) in the base of the blade recess (30) (24).

Description

Die Erfindung betrifft eine Zerkleinerungswalze gemäß dem Oberbegriff des Anspruches 1 sowie eine Zerkleinerungsmaschine mit einer solchen.The invention relates to a comminution roller according to the preamble of claim 1 and a shredding machine with such a.

Ein Rotor gemäß dem Oberbegriff des Anspruches 1 ist beispielsweise aus dem DE-U 89 15 534 oder dem DE-A-4 242 740 bekannt. Bei ihm sind die Messeraufnahmen V-förmigen Querschnitt aufweisende transversale Nuten, welche in dreieckigen Querschnitt aufweisende Umfangsrippen des Walzengrundkörpers eingefräst sind. In diese Nuten sind Messerträger eingeschweißt, an denen ihrerseits dann die Messerkörper unter Verwendung von Schrauben befestigt sind.A rotor according to the preamble of claim 1 is known for example from DE-U 89 15 534 or DE-A-4 242 740. At the knife holders are V-shaped cross-section having transverse grooves, which are triangular Cross-sectional ribs of the roller base body are milled in. Knife carriers are in these grooves welded, on which in turn the knife body are attached using screws.

Durch die vorliegende Erfindung soll eine Zerkleinerungswalze gemäß dem Oberbegriff des Anspruches 1 so weitergebildet werden, daß die Messerkörper direkt am Walzengrundkörper angebracht sind.The purpose of the present invention is a shredding roller further developed according to the preamble of claim 1 be that the knife body directly on the roller body are attached.

Diese Aufgabe ist erfindungsgemäß gelöst durch eine Zerkleinerungswalze mit den im Anspruch 1 angegebenen Merkmalen.This object is achieved according to the invention by a comminution roller with the features specified in claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben.Advantageous developments of the invention are in the subclaims specified.

Bei einer Zerkleinerungswalze gemäß Anspruch 2 kann man die Messerkörper nach Verschleiß ihrer Schneidkanten umsetzen, um unverbrauchte Schneidkanten an die in Arbeitsdrehrichtung vorne und radial außenliegende Stelle zu bringen. In a shredding roller according to claim 2 can the knife body after wear of its cutting edges implement to unused cutting edges to the in the working direction of rotation at the front and radially outside Bring job.

Die Weiterbildung der Erfindung gemäß Anspruch 3 ist im Hinblick auf gute formschlüssige Abstützung der Meserkörper und gleichzeitige Gewährleistung der soebenen angesprochenen Umsetzbarkeit der Messerkörper von Vorteil.The development of the invention according to claim 3 is with regard to good positive support of the knife body while ensuring the levels mentioned feasibility of the knife body is an advantage.

Wählt man die Geometrie der Messerkörper gemäß Anspruch 4, so lassen sich diese sehr einfach aus Standard-Stahlstäben herstellen.Choosing the geometry of the knife body according to claim 4, so they can be made very easily from standard steel bars produce.

Bei einer Zerkleinerungswalze gemäß Anspruch 5 sind die Köpfe der zum Anbringen der Messerkörper verwendeten Gewindebolzen jeweils gegen mechanischen Verschleiß geschützt, so daß sich die Messerkörper auch nach längerer Arbeitszeit der Zerkleinerungswalze problemlos lösen lassen.In a shredding roller according to claim 5 the heads of those used to attach the knife bodies Threaded bolts against mechanical wear protected, so that the knife body even after a long time Easily solve the working time of the shredding roller to let.

Die Weiterbildung der Erfindung gemäß Anspruch 6 gestattet es, die Zerkleinerungswalze auch unter kleinem Spiel zwischen ihren Messerkörpern und den mit diesen zusammenarbeitenden Gegenmesser einzusetzen. Dies ist für die Zerkleinerung insbesondere von weniger formstabilen Kunststoffmaterialien wie Folienmaterial von Vorteil.The development of the invention according to claim 6 allows it, the shredding roller even with little play between their knife bodies and those working with them Use counter knife. This is for the Crushing especially of less dimensionally stable Plastic materials such as foil material are an advantage.

Mit der Weiterbildung der Erfindung gemäß Anspruch 8 wird eine sehr belastungsfähige Verbindung zwischen Messerkörpern und Messeraufnahmen erhalten, so daß sich derartige Rotoren auch zum Zerkleinern extrem widerstandsfähiger Materialien eignen.With the development of the invention according to claim 8 becomes a very resilient connection between Knife bodies and knife holders received so that such rotors are also extremely resistant to shredding Suitable materials.

Den gleichen Vorteil erhält man gemäß Anspruch 9 mit einem Messerkörper, der nur so dick zu sein braucht, daß er die Montagebohrung aufnehmen kann.The same advantage is obtained according to claim 9 a knife body that only needs to be so thick that it can accommodate the mounting hole.

Gemäß Anspruch 10 erhält man eine gute flächige Abstützung der Rückseite des Messerkörpers.According to claim 10 you get a good flat support the back of the knife body.

Die Weiterbildung der Erfindung gemäß Anspruch 11 ist im Hinblick auf rasche und einfache Montage der Stützkörper von Vorteil.The development of the invention is according to claim 11 with regard to quick and easy assembly of the support body advantageous.

Bei einer Zerkleinerungswalze gemäß Anspruch 12 hat man eine gute Abstützung des Messerkörpers, und zugleich ist gewährleistet, daß in Arbeitsdrehrichtung der Zerkleinerungswalze gesehen hinter den Messerkörpern keine Toträume liegen, in denen sich Material verfangen kann, welches sich im Arbeitsspeicher zwischen der Walzenoberfläche und den Zähnen des Gegenmessers verklemmen kann.Has in a shredding roller according to claim 12 one good support of the knife body, and at the same time it is ensured that the shredding roller is in the working direction seen behind the knife bodies none There are dead spaces in which material can get caught, which is in the working memory between the roller surface and can jam the teeth of the counter knife.

Bei einer Zekleinerungwalze gemäß Anspruch 13 ist der den Gewindbolzen vor transversalen Belastungen schützende Stützkörper im Inneren der lichten Kontur des Messerkörpers untergebracht, was im Hinblick auf eine klein bauende belastungsfähige Messerkörperbefestigung und im Hinblick auf die Realisierung einer in beiden Drehrichtungen arbeitenden Zerkleinerungswalze von Vorteil ist.In a shredding roller according to claim 13, the protecting the threaded bolt from transverse loads Support body inside the clear contour of the knife body housed what in terms of a small-scale resilient knife body attachment and with regard on the realization of one in both directions of rotation working shredding roller is advantageous.

Eine Zerkleinerungsmaschine gemäß Anspruch 14 hat gleiche Eingriffsgeometrie zwischen den Messerkörpern und den Zähnen des Gegenmessers, wie man sie bei einem üblichen Rotor hat, bei dem die Stirnfläche der Messerkörper im wesentlichen in einer axialen Ebene der Zerkleinerungswalze liegen.A comminution machine according to claim 14 has the same Intervention geometry between the knife bodies and the Teeth of the counter knife as you would with a normal one Rotor has, in which the end face of the knife body in essentially in an axial plane of the comminution roller lie.

Nachstehend wird die Erfindung anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert. Die Figuren der Zeichnung sind in unterschiedlichen Maßstäben hergestellt. Es zeigen:

Figur 1:
eine seitliche schematische Ansicht einer Zerkleinerungsmaschine für Holz- und Kunststoffabfall, wobei eine vordere Seitenwand eines Vorrats- und Spansammelbehälters weggebrochen ist;
Figur 2:
einen transversalen Schnitt durch ein praktisches Ausführungsbeispiel einer Zerkleinerungswalze für die Maschine nach Figur 1;
Figur 3:
einen axialen Teilschnitt durch die Zerkleinerungswalze nach Figur 2 längs der dortigen Schnittlinie III-III; sowie
Figuren 4 bis 7:
ähnliche Schnittansichten wie Figur 2, in welchen abgewandelte Zerkleinerungswalzen wiedergegeben sind.
The invention is explained in more detail below using exemplary embodiments with reference to the drawing. The figures in the drawing are made on different scales. Show it:
Figure 1:
a side schematic view of a shredder for wood and plastic waste, with a front side wall of a storage and chip collection container broken away;
Figure 2:
a transverse section through a practical embodiment of a comminution roller for the machine of Figure 1;
Figure 3:
an axial partial section through the shredding roller according to Figure 2 along the section line III-III; such as
Figures 4 to 7:
Similar sectional views as Figure 2, in which modified shredding rollers are shown.

In Figur 1 ist ein Vorratsbehälter für zu zerkleinernden Abfall wie Holz- oder Kunststoffreste insgesamt mit 10 bezeichnet. Er hat eine hintere Wand 12, eine hierzu parallele, in der Zeichnung weggebrochene vordere Wand, eine rechte Wand 14 und eine linksgelegene Wand 16. Der Boden des Vorratsbehälters 10 besteht aus zwei schräggeneigten aufeinander zulaufenden Wänden 18, 20 sowie einer horizontalen Bodenwand 22.In Figure 1 is a storage container for to be shredded Total waste such as wood or plastic residues Designated 10. It has a rear wall 12, one for this parallel front wall broken away in the drawing, a right wall 14 and a left wall 16. The bottom of the storage container 10 consists of two inclined converging walls 18, 20 and a horizontal bottom wall 22.

Unterhalb des unteren Endes der Wand 18 läuft eine insgesamt mit 24 bezeichnete Zerkleinerungswalze um. Diese hat einen Walzengrundkörper 26 mit einer Vielzahl axial aufeinanderfolgender Umfangsrippen 28. In letztere sind jeweils an diametral gegenüberliegenden Stellen zwei Messeraufnahmen 30 eingearbeitet, wobei die Messeraufnahmen 30 axial aufeinanderfolgender Umfangsrippen in Umfangsrichtung jeweils um einen konstantent Winkelbetrag gegeneinander versetzt sind, der beim dargestellten Ausführungsbeispiel 45° beträgt, in der Praxis deutlich kleiner gewählt wird, z. B. zu 15°.Below the lower end of the wall 18 one runs in total comminution roller designated by 24. This has a roller base body 26 with a plurality of axially successive circumferential ribs 28. In the latter are two each at diametrically opposite positions Knife receptacles 30 incorporated, the knife receptacles 30 axially successive circumferential ribs in the circumferential direction against each other by a constant angular amount are offset, in the illustrated embodiment Is 45 °, much smaller in practice is chosen, e.g. B. to 15 °.

In den Messeraufnahmen 30 sitzen jeweils Messerkörper 32. Einzelheiten der Befestigung der Messerkörper 32 werden später noch genauer beschrieben.Knife bodies each sit in the knife receptacles 30 32. Details of the attachment of the knife body 32 will be described in more detail later.

Der Walzengrundkörper 26 hat an seinen beiden Stirnflächen angeformte Stummelwellen 34, die in nicht gezeigten Lagern laufen, die von der hinteren und vorderen Wand des Vorratsbehälters 10 getragen sind. Die Zerkleinerungswalze 24 wird durch einen Getriebemotor 36 entgegen dem Uhrzeigersinne angetrieben, wie in Figur 1 schematisch angedeutet.The roller base body 26 has on its two end faces molded stub shafts 34, which are not shown in FIG Bearings run from the back and front walls of the reservoir 10 are worn. The shredding roller 24 is countered by a geared motor 36 driven clockwise, as schematically in Figure 1 indicated.

Wie ebenfalls aus Figur 1 ersichtlich, gehen die Mittelebenen der Messerkörper 32 nicht durch die Achse der Zerkleinerungswalze 24, liegen vielmehr in Arbeitsdrehrichtung der Zerkleinerungswalze 24 gesehen vor der Walzenachse. Auf diese Weise ist gewährleistet, daß die vorne liegenden Schneidkanten der Messerkörper 32 unter größerem Abstand um die Walzenachse umlaufen als die in Arbeitsdrehrichtung gesehen hinteren, nicht aktiven Schneidkanten der Messerkörper 32.As can also be seen from FIG. 1, the middle planes go the knife body 32 is not through the axis of the Crushing roller 24, are rather in the working direction the shredding roller 24 seen in front of the Roller axis. This ensures that the front cutting edges of the knife body 32 revolve at a greater distance around the roller axis than the rear, inactive in the working direction of rotation Cutting edges of the knife body 32.

Wie aus Figur 1 ersichtlich, ist die Bodenwand 22 bezüglich der Achse der Zerkleinerungswalze 24 nach unten versetzt, und ihr in der Zeichnung rechts gelegener freier Abschnitt ist durch ein Gegenmesser 38 gebildet, welches am freien Ende Zähne 40 aufweist, zwischen denen Zwischenräume 42 verbleiben. Die gesamte Anordnung ist so gewählt, daß die Messerkörper 32 unter geringem Spiel durch die Zwischenräume 42 hindurchlaufen können und zwischen den Zähnen 40 und den Umfangsrippen 28 ein Zwischenraum verbleibt, der zwar größer ist als der Arbeitsspalt zwischen Messerkörpern 32 und Gegenmesser 38, jedoch so klein, daß sich dort kein Material verklemmen kann.As can be seen from Figure 1, the bottom wall 22 is relative the axis of the shredding roller 24 down offset, and her on the right in the drawing free section is formed by a counter knife 38, which has teeth 40 at the free end, between which spaces 42 remain. The whole Arrangement is chosen so that the knife body 32 under run through the gaps 42 with little play can and between the teeth 40 and the circumferential ribs 28 a gap remains, which is larger is as the working gap between knife bodies 32 and Counter knife 38, but so small that there is no Material can jam.

Um die Zerkleinerungswalze 24 herum ist ein zylindrisches Lochsieb 44 angeordnet, über welches die Messerkörpe 32 unter kleinem Spiel hinweglaufen.Around the shredding roller 24 is a cylindrical one Hole screen 44 arranged over which the knife body 32 run away with little play.

Unterhalb des Lochsiebes 44 ist eine V-förmigen Querschnitt aufweisende Sammelrinne 46 vorgesehen, in welcher eine Förderschnecke 48 läuft, welche durch einen Motor 50 angetrieben wird, wie schematisch angedeutet. Die Förderschnecke 48 fördert so zerkleinertes Material aus der Sammelrinne 46 in einen Abgabestutzen 52.Below the perforated screen 44 is a V-shaped cross section having collecting channel 46 provided, in which a screw conveyor 48 runs through one Motor 50 is driven, as indicated schematically. The screw conveyor 48 conveys shredded material from the collecting trough 46 into a delivery nozzle 52.

Über der Bodenwand 22 ist ein kastenförmiger Schieber 54 durch einen doppeltwirkenden Hydraulikzylinder 56 verfahrbar, der seinerseits periodisch durch eine Hydraulikeinheit 58 im Sinne eines Ausfahrens bzw. Einfahrens seiner Kolbenstange mit Drucköl beaufschlagt wird. Der Schieber 54 drückt auf der Bodenwand 22 liegendes Material in den Eingriffsbereich zwischen der Zerkleinerungswalze 24 und dem Gegenmesser 38.Above the bottom wall 22 is a box-shaped slide 54 by a double-acting hydraulic cylinder 56 movable, which in turn periodically by a hydraulic unit 58 in the sense of an extension or retraction pressurized oil on its piston rod becomes. The slider 54 presses lying on the bottom wall 22 Material in the area of engagement between the Shredding roller 24 and counter knife 38.

Die Figuren 2 und 3 zeigen eine erste Art der Befestigung der Messerkörper 32 an den Messeraufnahmen 30.Figures 2 and 3 show a first type of attachment the knife body 32 on the knife receptacles 30.

Die Messeraufnahmen 30 sind in transversaler Richtung mittig durch einen Abschnitt einer Umfangsrippe gefräst und reichen doppelt so tief wie die normale Höhe der Umfangsrippe. Die Umfangsrippen haben dreieckigen Querschnitt mit einem außenliegenden Öffnungswinkel von 90°. Die Messeraufnahmen 30 haben ebenfalls unter einem Winkel von 90° angestellte seitliche Begrenzungsflächen. Auf diese Weise stellen die Messeraufnahmen 30 bei einer Winkelposition eine glatte Fortsetzung der Flanken benachbarter Umfangsrippen dar.The knife receptacles 30 are in the transverse direction milled centrally through a section of a peripheral rib and reach twice the normal height of the Circumferential rib. The peripheral ribs have a triangular cross section with an outside opening angle of 90 °. The knife receptacles 30 also have one Lateral boundary surfaces set at 90 °. In this way, the knife receptacles 30 at one Angular position a smooth continuation of the flanks of neighboring Circumferential ribs.

Die Messerkörper 32 sind quadratische Prismen. Ihre in Drehrichtung vorne bzw. hintenliegenden Stirnflächen werden in der vorliegenden Beschreibung und den Ansprüchen zu sammen als Hauptflächen bezeichnet. Der Abstand der Hauptflächen wird auch als Dicke oder Länge der Messerkörp bezeichnet, die Kantenlänge der Hauptflächen kurz auch als Kantenlänge des Messerkörpers.The knife bodies 32 are square prisms. Your in Direction of rotation front or rear end faces in the present description and claims collectively referred to as main surfaces. The distance of the Main surfaces are also called the thickness or length of the knife body referred to, the edge length of the main faces also short as the edge length of the knife body.

Längs einer der Diagonalen der Messerkörper-Mittelebene ist eine von beiden Seiten her abgestufte Montagebohrung 60 vorgesehen. Im Boden der Messeraufnahme 30 ist eine Gewindebohrung 62 vorgesehen, und die Messerkörper 32 sind jeweils durch einen Gewindebolzen 64 an einer Gewindebohrung 62 festgeschraubt, wobei der Kopf 66 des Gewindebolzens vollständig in dem mit 68 bezeichneten erweiterten Bohrungsabschnitt der Montagebohrung 60 Aufnahme findet. Auf diese Weise sind die Messerkörper 32 fest, jedoch lösbar mit dem Walzengrundkörper 26 verbunden.Along one of the diagonals of the knife body median plane is a mounting hole stepped from both sides 60 provided. In the bottom of the knife holder 30 is one Threaded hole 62 is provided, and the knife body 32 each by a threaded bolt 64 on a threaded bore 62 screwed, the head 66 of the threaded bolt completely in the expanded designated 68 Bore section of mounting hole 60 receptacle finds. In this way, the knife bodies 32 are fixed, however releasably connected to the roller base body 26.

Wie aus Figur 3 ersichtlich, ist die Kantenlänge der Messerkörper 32 größer als die Länge der Flanken der Umfangsrippen 28. Auf diese Weise steht die Spitze der Messerkörper 32 jeweils um eine entsprechende Strecke d über die Spitze der zugeordneten Umfangsrippe 28 über. Dies hat zur Folge, daß man dann, wenn man einen kleinen Spalt s zwischen dem Gegenmesser 38 und den Messerkörpern 32 einstellt, einen entsprechend größeren Spalt S* zwischen den Flanken der Umfangsrippen 28 und dem Gegenmesser 38 hat.As can be seen from Figure 3, the edge length is Knife body 32 larger than the length of the flanks of the Circumferential ribs 28. In this way, the tip of the Knife body 32 each by a corresponding distance d over the tip of the associated circumferential rib 28 over. This means that if you have a small Gap s between the counter knife 38 and the knife bodies 32 sets a correspondingly larger gap S * between the flanks of the circumferential ribs 28 and the Counter knife 38 has.

In Figur 2 ist der Durchstoßpunkt der Achse der Zerkleinerungswalze 24 durch die Zeichenebene mit M bezeichnet. Würde man die Achse der Gewindebohrung 62 so legen, daß sie den Punkt M schneidet, so würden die in Arbeitsdrehrichtung vorneliegende äußerste Spitze eines Messerkörpers 32 unter gleichem Abstand um die Walzenachse umlaufen wie die hintere äußerste Spitze. Um dies zu vermeiden, ist der Boden der Messeraufnahme 30 gegenüber dem vorbeschriebenen Fall um einen Winkel w verkippt, so daß die Achse der Gewindebohrung 62 und damit die Mittelebene des Messerkörpers 32 in Drehrichtung gesehen vor der mit M bezeichneten Achse der Zerkleinerungswalze 24 liegt. In anderen Worten bedeutet dies, daß der Messerkörper 32 nun in der Messeraufnahme 30 außermittig sitzt, nämlich in Arbeitsdrehrichtung der Zerkleinerungswalze gesehen etwas nach vorn verschoben. Wie aus Figur 2 ersichtlich, hat dies zur Folge, daß die hintere Spitze des Messerkörpers 32 nunmehr auf einem kleineren Radius umläuft wie die vordere Spitze.In Figure 2, the piercing point is the axis of the shredding roller 24 denoted by M in the drawing plane. Would the axis of the threaded hole 62 so that it intersects the point M, so the outermost tip in working direction a knife body 32 at the same distance around the Roller axis revolve like the rear extreme tip. To avoid this, the bottom of the knife holder is 30 compared to the case described above by an angle w tilted so that the axis of the threaded bore 62 and thus the center plane of the knife body 32 in the direction of rotation seen in front of the axis of the shredding roller marked with M. 24 lies. In other words means this means that the knife body 32 is now in the knife holder 30 sits off-center, namely in the working direction seen the shredding roller slightly moved forward. As can be seen from FIG. 2, this has the consequence that the rear tip of the knife body 32 now on a smaller radius orbits like the front tip.

Beim Ausführungsbeispiel nach Figur 4, hat der Messerkörper 32 die doppelte Dicke wie beim Ausführungsbeispiel nach Figur 2, und in ihm sind in Dickenrichtung beabstandet zwei Montagebohrungen 60 und 60' vorgesehen. Entsprechend hat auch der Boden der Messeraufnahme 30 zwei Gewindebohrungen 62, 62', deren Abstand demjenigen der Montagebohrungen 60, 60' entspricht. Der Messerkörper 32 ist nun durch zwei Gewindebolzen 64, 64' an dem Boden der Messeraufnahme 30 verspannt und somit besonders zuverlässig gegen Kippmomente und Schlagbelastungen gesichert.In the embodiment of Figure 4, the knife body 32 twice the thickness as in the embodiment according to Figure 2, and in it are in the thickness direction spaced two mounting holes 60 and 60 'are provided. Correspondingly, the bottom of the knife holder 30 also has two threaded bores 62, 62 ', the distance between which corresponds to the mounting holes 60, 60 '. The knife body 32 is now on by two threaded bolts 64, 64 ' braced the bottom of the knife holder 30 and thus particularly reliable against tilting moments and impact loads secured.

Der Messerkörper nach Figur 4 kann genauso wie der Messerkörper nach Figur 2 viermal umgesetzt werden, um jeweils zwei neue Schneidkanten in Eingriff mit den Zähnen des Gegenmessers 38 zu bringen. The knife body according to FIG. 4 can do the same as the knife body are implemented four times according to FIG two new cutting edges in engagement with the teeth of the Bring counter knife 38.

Beim Ausführungsbeispiel nach Figur 5 ist der in Arbeitsdrehrichtung gesehen hintenliegende Abschnitt des dicken Messerkörpers von Figur 4 durch einen Stützkörper 70 ersetzt, der einen oberen, als Vierkant ausgeführten Stützabschnitt 72 und einen unteren Gewindeabschnitt 74 aufweist. Letzterer ist in die hintere Gewindebohrung 62' eingedreht. Damit der Stützabschnitt 72 beim Eindrehen des Stützkörpers 70 an den benachbarten Umfangsrippen und den Seitenwänden der Messeraufnahme 30 vorbeilaufen kann, ist koaxial zur Gewindebohrung 62 ein zylindrische Ausfräsung 76 der benachbarten Umfangsrippen vorgesehen.In the embodiment of Figure 5 is in the working direction seen back section of the thick Knife body of Figure 4 by a support body 70th replaced, an upper, designed as a square Support portion 72 and a lower threaded portion 74 having. The latter is in the rear threaded hole 62 ' turned in. So that the support section 72 when screwing in of the support body 70 on the adjacent circumferential ribs and can run past the side walls of the knife holder 30, is coaxial to the threaded bore 62 a cylindrical cut 76 of the adjacent circumferential ribs are provided.

Die Messerbefestigung nach Figur 5 ist bezüglich der Abstützung und Verkippsicherung des Messerkörpers 32 im wesentlichen gleichwertig zur Messerbefestigung nach Figur 4; man kann aber kleinere Dicke aufweisende Messerkörper verwenden.The knife attachment according to Figure 5 is with respect to Support and tilt protection of the knife body 32 essentially equivalent to the knife attachment Figure 4; but one can have smaller thickness knife bodies use.

Auch bei der Zerkleinerungswalze nach Figur 6 werden kleine Dicke aufweisende Messerkörper verwendet. Ein Stützkörper 78, an dessen in der Zeichnung links gelegener Stirnfläche die Rückseite des Messerkörpers 32 bündig anliegt, enthält eine Montagebohrung 60', durch welche sich ein Gewindebolzen 64' erstreckt.Also with the comminution roller according to FIG. 6 small thickness knife body used. On Support body 78, on the left in the drawing End face the rear of the knife body 32 is flush, contains a mounting hole 60 'through which extends a threaded bolt 64 '.

Der Stützkörper 78 ist in seiner Unterseite komplementär zur Form der Messeraufnahme 30 und stellt in seinem oberen Abschnitt eine glatte Fortsetzung der Umfangsrippe 28 dar.The support body 78 is complementary in its underside to the shape of the knife holder 30 and puts in his upper section a smooth continuation of the peripheral rib 28 represents

Figur 7 zeigt eine ins Innere des Messerkörpers integrierte Stützeinrichtung, die insbesondere auch gestattet, Messerkörper mit konkaven Hauptflächen mit einem einfache Geometrie aufweisenden Stützkörper gut abzustützen. Figure 7 shows an integrated into the interior of the knife body Support device, which in particular also allows knife bodies with concave main surfaces with a simple Support the geometry of the support body well.

Die Gewindebohrung 62 ist mit einer Gegenbohrung 80 versehen, die gleichen Durchmesser und geringfügig kleinere Tiefe hat wie die Gegenbohrung 68 des Messerkörpers 32. In die fluchtenden Gegenbohrungen 68 und 80 ist eine Stützhülse 82 spielfrei eingesetzt, deren Länge etwa der doppelten Länge der Gegenbohrung 80 entspricht. Damit hält die Stützhülse 82 transversale Schlagbelastungen und Kippmomente zuverlässig von dem Gewindebolzen 64 fern, behindert aber nicht ein festes Verspannen des Messerkörpers 32 mit dem Boden der Messeraufnahme 30.The threaded bore 62 is provided with a counter bore 80, the same diameter and slightly smaller Like counterbore 68 of knife body 32, depth has In the aligned counter bores 68 and 80 is one Support sleeve 82 used without play, the length of which corresponds to twice the length of the counterbore 80. In order to the support sleeve 82 holds transverse impact loads and tilting moments reliably away from the threaded bolt 64, but does not hinder firm clamping of the knife body 32 with the bottom of the knife holder 30.

Man erkennt, daß die Messerbefestigung gemäß Figur 7 auch in Verbindung mit Messerkörpern 32 verwendbar ist, welche konkave Hauptflächen haben, wie bei 84 gezeigt.It can be seen that the knife attachment according to FIG. 7 can also be used in conjunction with knife bodies 32, which have major concave surfaces as shown at 84.

Claims (13)

  1. Comminution roller for a comminution machine, having a roller basic body (26), having a plurality of blade holders (30) provided in the peripheral surface of the latter and having a plurality of blade bodies (32) detachably fastened in the blade holders (30), wherein the main faces of the blade bodies (32) are lozenge-shaped and the blade holders (30) are V-shaped in cross section, wherein the opening angle of the blade holders corresponds to the opening angle of the lozenge of the blade body cross section and wherein the blade holders (30) have threaded bores (62) and the blade bodies (32) have assembly bores (60), which run parallel to their front and rear main faces and through each of which extends a threaded bolt (64), which is screwed into a threaded bore (62) of the associated blade holder (32), characterized in that the assembly bores (60) extend along the diagonal of the central surface of the blade bodies (32) and that emanating from the base of the blade holders (30) is in each case at least one threaded bore.
  2. Comminution roller according to claim 1, characterized in that the blade bodies (32) are constructed symmetrically relative to the assembly bore (60).
  3. Comminution roller according to claim 1 or 2, characterized in that the main faces of the blade bodies (32) are in the shape of a square.
  4. Comminution roller according to one of claims 1 to 3, characterized in that the assembly bores (60) have counterbores (68), in which a head (66) of a threaded bolt (64) is in each case fully accommodated.
  5. Comminution roller according to one of claims 1 to 4, characterized in that the blade bodies (32) have a constant cross section viewed in longitudinal direction of the blade holders (30) and the geometry of the blade holders (30) and the fastening location of the blade bodies (32) are so selected that the, viewed in operating direction of rotation of the comminution roller (24), rear outer edges of the blade bodies (32) rotate in a circle having a smaller diameter than the, viewed in operating direction of rotation, front outer edges of the blade bodies (32).
  6. Comminution roller according to claim 5, characterized in that the blade bodies (32) are disposed eccentrically relative to the centre of the roller secant predetermined by the base of the blade holder (30).
  7. Blade body according to one of claims 1 to 6, characterized in that provided at the base of the blade holders (30) are in each case two threaded bores (62, 62'), which are spaced apart in longitudinal direction of the blade holder (30), and blade bodies (32) are prismatic parts of corresponding length and comprise in each case two assembly bores (60, 60') according to the spacing of the threaded bores (62, 62') and are connected in each case by two threaded bolts (64, 64') to the roller basic body (26).
  8. Comminution roller according to one of claims 1 to 7, characterized in that provided at the base of the blade holders (30) are two spaced-apart threaded bores (62, 62') and fastened to the, viewed in operating direction of rotation, rear one of the two threaded bores is a support body (70; 78), against the - viewed in operating direction of rotation - front end face of which lies the rear side of a blade body (32), which is fastened to the - viewed in operating direction of rotation - front one of the threaded bores (62, 62').
  9. Comminution roller according to claim 8, characterized in that the support body (70) is a round rod with a flattened portion or a square rod.
  10. Comminution roller according to claim 9, characterized in that formed on the support body (70) is a threaded portion (74), which is screwed into the associated threaded bore (62').
  11. Comminution machine according to claim 8, characterized in that the support body (78) has a radially inner-lying boundary surface, which is complementary to the boundary surface of the blade holder (30), and a radially outer-lying boundary surface, which is a smooth continuation of the outer surface of the peripheral rib (28) of the roller basic body (26).
  12. Blade body according to one of claims 1 to 6, characterized in that the threaded bore (62) has a counterbore (80) and the assembly bore (60) has a counterbore (68), wherein said two counterbores have the same diameter, and that extending without play into both counterbores (68, 80) is a support sleeve (82), through which the threaded bolt (64) passes.
  13. Comminution machine having a comminution roller according to one of claims 6 to 12, characterized in that a counterpart blade (38) having a plurality of teeth (40), which engage between the rotating blade bodies (32) carried by comminution roller (24), are offset relative to the axis of the comminution roller (24) or tilted relative to a plane passing through the axis of the comminution roller (24) such that the cooperating main faces of blade bodies (32) and counterpart blade (38) are substantially parallel to one another when the blade bodies (32) run over the counterpart blade (38).
EP96904065A 1995-02-15 1996-02-12 Milling roller and mill fitted therewith Revoked EP0809533B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19506848 1995-02-15
DE19506848A DE19506848A1 (en) 1995-02-15 1995-02-15 Shredding roller and shredding machine with such
PCT/EP1996/000588 WO1996025231A1 (en) 1995-02-15 1996-02-12 Milling roller and mill fitted therewith

Publications (2)

Publication Number Publication Date
EP0809533A1 EP0809533A1 (en) 1997-12-03
EP0809533B1 true EP0809533B1 (en) 2000-05-17

Family

ID=7755181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96904065A Revoked EP0809533B1 (en) 1995-02-15 1996-02-12 Milling roller and mill fitted therewith

Country Status (4)

Country Link
EP (1) EP0809533B1 (en)
AT (1) ATE192946T1 (en)
DE (2) DE19506848A1 (en)
WO (1) WO1996025231A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9144803B2 (en) 2011-06-24 2015-09-29 Vecoplan Llc Shredder with multi-point cutters

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1009850C2 (en) * 1998-08-12 2000-02-15 Visno Maschf B V Device for shredding and grinding coarse material.
FR2785205B1 (en) 1998-10-30 2001-01-26 Phenix Ind WASTE GRINDING DEVICE
FI20030159A (en) * 2003-02-03 2004-08-04 Bmh Wood Technology Oy Combination consisting of a crusher rotor and its counterbalance construction
CN105435921B (en) * 2016-01-06 2018-08-31 河北华明木塑制品有限公司 A kind of single roll crusher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4176800A (en) * 1978-01-11 1979-12-04 Garbalizer Corporation Of America Materials reduction structure
DE8915534U1 (en) * 1989-09-28 1990-09-06 Vecoplan GmbH Maschinenfabrik, 5439 Bad Marienberg Waste shredding device
DE4242740C2 (en) * 1992-12-17 1998-09-10 Holz Metall Abfall Recyclingte Shredding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9144803B2 (en) 2011-06-24 2015-09-29 Vecoplan Llc Shredder with multi-point cutters

Also Published As

Publication number Publication date
EP0809533A1 (en) 1997-12-03
WO1996025231A1 (en) 1996-08-22
ATE192946T1 (en) 2000-06-15
DE19506848A1 (en) 1996-08-22
DE59605250D1 (en) 2000-06-21

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